quite the opposite... especially with this breed... you MUST take your dog out... walk them around, introduce them to EVERYONE... SOCIALIZE! SOCIALIZE! SOCIALIZE!!! introduce them to the (friendly) neighborhood dogs while your pup is still too young to know he's supposed to be aggressive to other dogs... who knows, it may help... let everyone in the neighborhood meet and greet your dog, this serves several purposes... people see you don't have a killer, you have a DOG, they know what your dog LOOKS like so if it ever gets away/gets stolen/ etc they can identify the dog and let you know they saw it, and it gets your dog used to as many people as possible and makes them much more likely to never be aggressive to anyone... confine your dog to your back yard and they know no-one, and no-one knows your dog... it will create fearfullness and fear-aggression.

also, i'm no expert, but i would think that confining the dog to the backyard would make them more likely to jump the fence, because they wanna see what they are missing, if you at least take them out and about, they will satisfy thier curiosity... but then again, i'm no expert, so don't quote me on that one.

Taking your dog out is great for you and the pup, however, be careful until you have all of the shots up to date. There are all sorts of nasties on the ground and your little dog can get very sick. If you take him out before then you might want to carry him most of the time so he doesn't pick anything up.

Our dogs are very prone to parvo and it will take down a puppy in a matter of days. Once you get the shots you should be fine!

Enjoy walking that dog, it will make both of you healthier and happier!